CentOS / RHEL 7 Restart / Stop / Start Networking Command

Posted on in Categories , , last updated July 22, 2014

I recently installed CentOS Linux version 7 or Red Hat Enterprise Linux version 7. How can I restart networking service using command line options? How can I start / stop and restart networking service on a CentOS/RHEL 7 based system?

CentOS 7 / RHEL 7 / Fedora Linux (many other modern distor) uses Systemd. It is a system and service manager for Linux operating systems. In newer distro such as CentOS7/RHEL7 systemd replaces Upstart as the default init system.

In older versions of CentOS or Red Hat Enterprise Linux, you used init scripts located in the /etc/rc.d/init.d/ directory. These init scripts were typically written in Bash, and allowed the system administrator to control the state of services and daemons in their system. In CentOS/RHEL 7, these init scripts have been replaced with service units.

CentOS 7 / RHEL 7 networking service name

To bring up/down networking service you need to use the network.service.

Say hello to systemctl command

Use this command to control the systemd system and act as a service manager.

CentOS 7 / RHEL 7 get status of network service

sudo systemctl status network.service

OR

sudo systemctl status network

Sample outputs:

Fig.01: CentOS / RHEL 7 Networking Service Status Command
Fig.01: CentOS / RHEL 7 Networking Service Status Command

CentOS 7 / RHEL 7 restart network service

sudo systemctl restart network.service

OR

sudo systemctl restart network

CentOS 7 / RHEL 7 start network service

sudo systemctl start network.service

OR

sudo systemctl start network

CentOS 7 / RHEL 7 stop network service

sudo systemctl stop network.service

OR

sudo systemctl stop network

Sample outputs:

Animated gif 01: systemctl command in action
Animated gif 01: systemctl command in action

A note about old service and chkconfig command

The service and chkconfig commands are still available in the system and work as expected, but are only included for compatibility reasons and should be avoided as may be dropped in future release.

Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter, Facebook, Google+.

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14 comment

  2. Hi there,

    Before anything else good article and thanks for it ;) just a quick add to it, Firewall in CentOS 7 works a bit differently than previous ones has I noticed, so if anybody is having difficulty accessing the Nagios web GUI at the end, try adding this firewall rules for ports 80 (http) and 443 (https):

    [[email protected] /]# firewall-cmd –permanent –zone=public –add-service=http
    [[email protected] /]# firewall-cmd –permanent –zone=public –add-service=https
    [[email protected] /]# firewall-cmd –reload

    And after that you should now be able to access the web GUI with no problems ;)

    Best ragards

    Reply Report comment

      1. @Daniel, third this motion, systemd is incompatible with SysV which proved pretty clean and easy to maintain. I’m afraid systemd will end up another upstart.

        really like SysV scripts, and I am afraid that it is not easy to upgrade from redhat/centos 6.x to 7.

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  5. Your firewall commands didn’t work with my fresh CentOS 7 install.
    I had to do the follwoing to access my webserver/httpd remotely:

    [code]firewall-cmd –permanent –zone=public –add-port=80/tcp
    systemctl restart firewalld.service[/code]

    Reply Report comment

  6. A lot of new things in CentOS 7. I think, it isn’t easy for IT people to change the configurations from CentOS 6.X to 7.0 (short but big change!?), not easy to follow in this time.

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  8. I wanna ask something about network manager, how to lock network manager only root can change or edit the setting, or must input root password to edit the network setting from network manager.
    because if user click network manager icon, user can change the setting without permission.

    prevent user from changing the network setting.

    thank you
    regards

    Reply Report comment

  9. Hi,

    I just started to use CentOS 7, but I see some problems with network stop/start/restart.
    The current implementation does not allow to retain an address if the interface is down (useful of the machine is a gateway and it is accessed from the ‘still-alive’ connection), probably I need to use a loopback address for this purpose.
    Can anyone tell me if there’s a method to restart a single interface, other than nmtui ?
    only the plain old ifdown/ifup ?
    TIA

    Reply Report comment

    1. if you do a few commands

      nmcli con show ## this will show you the names of the connections##
nmcli con reload eth0
nmcli con down eth0
nmcli con up eth0

      Look at nmcli con commands they are pretty easy

      Reply Report comment

  11. I dont mind this new way to control programs with 1 caveat. I the old system if you were not quiet sure of the spelling of the service (i.e spamassassin or ist spamasissin or etc etc) all you had to do was type /etc/init.d/spam and a couple of tabs and you could easily get it. I made a link to /etc/init.d called apps so it was even easier just typed /apps/spam and got it that way. I can not see an easy way to do this in the new system otherwise no problems. (maybe some one can show me)

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